Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is established. The description adds the scope 'owned by the API-key account', which clarifies data ownership. However, it does not disclose other behavioral aspects such as pagination behavior or return structure, so a 3 is appropriate given the annotations carry the core safety information.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence with no redundant words. It front-loads the verb and resource, and every word carries meaning. This is ideal conciseness for a simple tool.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

While the core purpose is clear, the description omits any mention of the parameters' purpose or the return format. Given there is no output schema and no parameter descriptions, an agent lacks critical details for correct invocation. The annotations cover safety but not semantics, so the description is incomplete for a tool with two optional filters.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description does not explain the 'limit' or 'status' parameters at all. The agent cannot infer what these filters do without additional context. Since the description fails to compensate for the lack of schema descriptions, it scores 1.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a clear verb and resource: 'List consulting clients'. The scope qualifier 'owned by the API-key account' adds specificity and distinguishes this from related list tools like list_consulting_engagements. However, it does not explicitly name a sibling or contrast with them, so it earns a 4 rather than a 5.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It only states the action, with no mention of conditions, exclusions, or related tools. The large sibling list includes many list operations, but no routing guidance is given, leaving the agent to guess based purely on the name.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.